Career opportunity Senior Software Engineer (Full Stack)

Senior Software Engineer (Full Stack)

engineer-head
Locations
Tokyo
Salary
¥8,500,000〜¥12,000,000 (Annual)
Recruitment industry
Programmer, Backend Engineer, Frontend Engineer
Employment status
Full time employee
Residency status
Working visa (Skilled labor, Humanities knowledge, International services)

Job description

  • Develop systems such as data management platforms or AI-powered quotation tools.
  • Collaborate with PdMs, designers, and engineers from a user-centric perspective.
  • Formulate technical strategies aligned with business goals.
  • Lead technology selection and architecture design across frontend and backend.
  • Define requirements, design UI/data based on product strategy.
  • Maximize product value through new feature development.
  • Improve design considering UX and business needs.
  • Design infrastructure for scalability, maintainability, and performance.
  • Handle non-functional requirements like security and performance.

Requirement

Must-have

  1. Technical leadership in full-stack development.
  2. Proven experience in solving delivery-related project/product challenges.
  3. Fluent Japanese communication skills (e.g., JLPT N2 level with 3+ years work experience in Japan).
  • 7+ years of experience in frontend/backend development.
  • Led development from frontend to infrastructure with tech decision-making.
  • Experience improving productivity (e.g., CI/CD with Docker, coding conventions).

Nice-to-have

  • Backend experience using statically-typed languages.
  • UI/UX design experience (including working with designers).
  • Led process improvement based on Scrum/Agile.
  • Experience with large-scale systems, DDD, or microservices.
  • Knowledge in secure web app development.
  • Business-level English proficiency.

Ideal Candidate

  • Excited by bold, global product goals.
  • Takes initiative and ownership to solve fundamental challenges.
  • Communicates with respect and empathy.

Benefits

  • Annual salary: ¥8.5M–¥12M (monthly fixed salary)
  • 2 salary reviews per year, stock options available
  • Transportation allowance: ¥30,000/month (up to ¥60,000 for remote workers)
  • Child allowance: ¥15,000/month per dependent under 18
  • Team activity subsidies, book/learning support, server allowance
  • Wedding gift: ¥50,000; Birth gift: ¥100,000; Relocation support
  • Company PC provided, full medical checkup subsidy

Work Location

  • Remote-first environment (weekly office visit recommended, offsite once or twice per quarter)
  • Office available anytime (2-minute walk from JR Asakusabashi Station, Tokyo)

Work time

  • Flexible working hours with core time: 11:00–16:00
  • 2-day weekends, public holidays off
  • Summer leave: 3 days, Year-end/New Year: 6 days
  • Special leave upon joining: 3 days; Paid leave after 6 months
  • Nursing/care leave: 4 days/year; Refresh leave every 5 years: 5 days

Location

Tokyo

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